The great sandini is a 60 kg circus performer who is shotfrom a cannon (actually a spring gun). you don't find many men ofhis caliber, so you him design a new gun. this new gun has avery large spring with a very small mass and a force constant of1100 n/m that he will compress with a force of4400 n. the inside of the gun barrel is coated with teflon, sothe average friction force will be only 40 n during the 4.0 m he moves in the barrel.
at what speed will he emerge from the end of the barrel, 2.5 mabove his initial rest position?

V=15.3 m/s

Explanation:

To solve this problem, we have to use the energy conservation theorem:

the elastic potencial energy is given by:

The work is defined as:

this work is negative because is opposite to the movement.

The gravitational potencial energy at 2.5 m aboves is given by:

the gravitational potential energy at the ground and the kinetic energy at the begining are 0.

the cellphone, they would then know if the killer would have contacted them or always hated them. or if it was a breakup. but if that is not the case, then it would be the clothing. to put in a bullet, it would have to be put in by hands. hands have finger prints which, would have giving you the answer of who done it.

explanation: